Oil-saving attachment for well tubing



Nov. 16 1926.

l.. c.- Ross ET AL v onJ sAvINs ATTACHMENT Fon wmTTumc' Filed April 19, 1926 2 Sheets-Shet l Eli INVENTORS ATTORNEY WITNESS:

Y v"1,607,481 La C. ROSS ET AL y oIL sAvING ATTACHMENTV FOR wELL TUBI-NG Nov. 16 192e.

Filed April. 19, 1926 2 SheetSShee. l2

aaw'v lizzie/uefa i EY lrlvnENToRs ATTORNEY WITNESS:

-^; 55 of the' well casing 10.- Collars 18 and 19 are( 440 are connected.

Patent@ Nov. 16,1926.

UNITED .STAT-Es PATENT OFFICE. l

LEWIS C.. ROSS AND HERMAN EDWARD DANIEL, F AUS'IWELL, T-XAS.

oIL-sAvING ATTACHMET Fon WELL TUBING.

Application led April 19, 1926. Serial No. 103,099.

The object of this invention is to provide vfor saving oil in a well tubing when said tubing isp'ulcd or drawn upwardly in the casing for the purpose of making repairs to operative elements or tne like. A further object is to avoid the waste of oil and the danger incident to allowing the oil in several thousand 'feet of well tubing to flow onto the surface of the ground when '10 the well tubing is lifted under usual con' understood that yniodilications may be made within the scope of theclaims, without de'- parting from the spirit of the invention.v

In the drawings forming part of this application,

Figure 1 is a vertical section throughV a -well casing, showing the tubing and the valve controlling means in elevation. Figure 2 is a vertical section through the casing andthe well tubing and attachments.

Figure 3 isa view similar to Figure 2,`

the valves .having opened because of the movementv of the tubing relative to the collars with which the longitudinal springs Figure 4 is a section on line 4-4 of Figure 2.

Y Figure 5 is a section on line 5-5of Figure 1. Y

rIfhe casing of the well is designated 10, a

section of tubing is designated 11, and another section 12 has. threaded connection with element 11 by means of coupling 13.l

Keyed for slidable movement on section 11 of the tubing. are collars-14 and 15, and rigidly secured to collars 14 and 15 are springs 16.. Four of these springsv are illustrated in the drawings, and in Figure 5 they vare shown as engaging the inner4 wall rigidlysec'ured to tubing 11, and a coiled spring 2O is interposed between collar 14 and collar 19, and when this spring 20 is expanded collar 18 isin engagement with collar 14, this being the position when the weight of the tubing holds the partsin the position of Figure l, or Figure 2, in which the valves referred to below, are closed.

The section 11l of the tubing includes` a body portion 11 provided with` ports suchv as 24 adapted to be closed vby 'plug valves A 25 properly seated by springs 26, shown in Figure 4. Valves 25 are controlled by arms 27 and connecting rods 28 secured to collar 14 by the pivot members, or screws 29. The connection at 28 is also a pivotal one.

The valve plugs 25 are-provided with l ports 25', Aand under normal conditions valves 25 are closed as shown in Figures 1, 2 and 4. When vthe tubing is lifted or `pulled, the springs 16 engage. the wall of the casing 10, and the collars 14 and 15, and rods 28 are held in a stationary position. The

well tubing continues to move, so that there is a crank action on arms 27, and the valvesl 25 rotate in the valve body, until the valves are'in the position of Figure 3, the orts 2 5 registering with the ports 24'in t e bod 11', so that an youtlet is provided for vthe oi and it is permitted .to flow back 'to the well. During thisfoperation, Vspring 2O` was compressed, but normally a1ds 1n holding the parts inthe position of`Figures-1and 2, wherein the valves 25 are closed..

Y Having thus described the invention, what is claimedas new, is

1. In a device of the class described, a.

section of tubing for a; well, said section having' laterally extending ports,;.val'ves closing theports, and means ory autox'maticallv .controlling the valves when the tubing is `fted, saidmeans comprising collapsib e devices for engagement with a well casing, collars connected with the expansible devices and.

surrounding the tubing, and means connecting one of the collars with the valves.

2. In a device ofthe class described, a section. of tubing for a well, said-section having laterally extending controlling the valves when the tubing is rts, valves clos' ing the ports, and meansv or automaticallylifted, said-means comprisingcolla sible de vices for engagement with a wel casmg,

collars connected with the expansible devices and surrounding the-tubing, means connecta spring surroundingA the tubing and ening one of the collars with the valves, and

`, with reference to the tubing.

Y tion of well tubing provided with laterally i 3. In a device 'of the class described, a sec`- tion of tubing for a well, said section having laterally extendin ports', valves closlng the ports, and means or automatically controllin the valves when the tubing is lifted, -sai means comprising collapsible devices for engagement with a well casing, collars connected with the expansible devices and splined on the tubin ,and inea-ns connecting oneof the collars with the valves.

4. `In a device of the class described, a secextending ports, rotary valves closing the lli ports, co ars splined on'the tubing', arms connecting the collars with the valves for rotating the latter, longitudinally extending springs connecting the collars and movable outwardly upon sliding movement of the 20 collars, for engaging a wellcasing, collars fixed on the tubing, and an expansion spring;- interposed between one of the fixed collarsv and one of the splined collars.

` In testimony whereof we aix our signa- 425 tures.

LEWIS C; ROSS. y HERMAN EDWARD DANIEL, 

